Seton Hall's starting salaries are misleading due to it being in the NYC area.
It was a Tier 2 by last years rankings, they just abolished the tier 2 category and called the whole top 100 tier 1. If you are deciding between a 50-100 and a 100-150 school, the specific of the school reputation in the region are far more important than what USNEWS has to say.
Remember, a big part of how USNEWS ranks is based of national reputation. Most Judges/Lawyers aren't familiar with schools outside their region and the top 20-30 schools.